US Bridges

SE 76th ST over Kimball Creek

Fair

King County, Washington · 0.5 MI W of SR-202 · Structure no. 084148000000000

Built
1960
65 years old, rebuilt 1973
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
47 ft
3 main spans
Daily traffic
11
2018 count
Owner
County
County Highway Agency

About this bridge

SE 76th ST over Kimball Creek is a wood or timber stringer/multi-beam or girder carrying SE 76th ST over Kimball Creek in King County, Washington. It was built in 1960 and reconstructed in 1973, so it is 65 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 11 vehicles a day, roughly 1% of them trucks, projected to reach 15 by 2040. The structure is 47 ft (14.3 m) long and 12 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesSE 76th ST
CrossesKimball Creek
Location0.5 MI W of SR-202
RouteCounty Highway 87640
Coordinates47.53225, -121.83775
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32 US tons
Inventory rating24 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 10
Structure length47 ft (14.3 m)
Longest span16 ft (4.9 m)
Deck width12 ft (3.7 m)
Roadway width10 ft (3.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (2018)
Projected traffic15 by 2040
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SE 76th ST over Kimball Creek built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1973.

What condition is SE 76th ST over Kimball Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does SE 76th ST over Kimball Creek carry?

About 11 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is SE 76th ST over Kimball Creek?

The structure is 47 ft (14.3 m) long with a longest span of 16 ft (4.9 m) and a deck 12 ft wide.

Who owns SE 76th ST over Kimball Creek?

It is owned by the County Highway Agency.